diff options
| author |   Srikanth A <srakula@cisco.com> | 2019-10-02 17:48:58 -0700 |
|---|---|---|
| committer |   John Lo <loj@cisco.com> | 2019-10-10 16:37:40 +0000 |
| commit | 02833ff3294f4abbd8e3d52b38446e0f8f533ffc (patch) | |
| tree | e2e9de14d3939938e502347723006f7bb374a02d /src/vnet/tcp/tcp.h | |
| parent | 8a047ed741072bdb8d93b0841473eae06ae3c9d0 (diff) | |
tcp: custom checksum calculations for Ipv4/Ipv6
Type: feature
Based on the configuration, we can disable checksum offload capability
and calculate checksum while pushing the TCP & IP header.
This saves some cycles when VPP stack is used in legacy hardware devices.
Signed-off-by: Srikanth A <srakula@cisco.com>
Change-Id: Ic1b3fcf3040917e47ee65263694ebf7437ac5668
(cherry picked from commit 3642782a2748503f5b5ccf89d1575c1d489948ef)
Diffstat (limited to 'src/vnet/tcp/tcp.h')
| -rw-r--r-- | src/vnet/tcp/tcp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index a1b7d4cbd0d..1bf32818171 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -120,6 +120,7 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler; _(RATE_SAMPLE, "Conn does rate sampling") \ _(TRACK_BURST, "Track burst") \ _(ZERO_RWND_SENT, "Zero RWND sent") \ + _(NO_CSUM_OFFLOAD, "No Checksum Offload") \ typedef enum _tcp_connection_flag_bits { @@ -1233,6 +1234,8 @@ vlib_buffer_push_tcp_net_order (vlib_buffer_t * b, u16 sp, u16 dp, u32 seq, th->window = wnd; th->checksum = 0; th->urgent_pointer = 0; + vnet_buffer (b)->l4_hdr_offset = (u8 *) th - b->data; + b->flags |= VNET_BUFFER_F_L4_HDR_OFFSET_VALID; return th; } |